The crowd drinking the raw milk probably largely intersects with the antivaxx part of the population and the "horse de-wormer cures COVID" people.
While they are - in a very broad sense - humans, their loss would generally improve the human gene pool.
Here the metric system comes to help: almost any liquid in the kitchen is about as dense as water, so 1ml = 1g.
Oils are a bit less dense, but there you just subtract 10%, i.e. 100ml rapeseed oil is about 90g.
Honey is a far outlier with 1.4g/ml, but it usually given in grams.